Judaism

The primary symbol of the Judaism is the Star of David (Magen David), also known as the Shield of David.

An excerpt from the article 24 facts about Judaism

It is a six-pointed star (hexagram) composed of two overlapping isosceles triangles (usually equilateral) that are rotated relative to each other.

The vertices of the Star of David, in the case of equilateral triangles, lie on a circle at points corresponding to the even hours on a clock face. In Jewish esoteric teachings, it is known by the traditional name of seal of Solomon.